Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Hacker News - Hacker News is a social news website focusing on computer science and entrepreneurship. It is run by Paul Graham's investment fund and startup incubator, Y Combinator.
Clever - syncing between education applications for K-12 schools
4chan - 4chan is a simple image-based bulletin board where anyone can post comments and share images.
Claroline - Claroline is a collaborative eLearning and eWorking platform.